I am ProcessOne founder and technical lead for ejabberd XMPP server and Boxcar mobile push notification service.
I am a developer, programming in Erlang, Elixir, Go and Swift, but I fancy working with many other languages.
I am expert in the following topics:
- Real-time messaging
 - XMPP based messaging solution (major contributor on ejabberd)
 - Push and notification system, web or mobile based
 - Erlang, with project like ejabberd, Tsung.
 - Scalable mobile architecture to support iOS and Android apps.
 - Mobile development, primarily iOS, Objective C and Swift.